Valve



L. J; TETLOW Dec. 3, 1935;

VALVE Filed Sept. 20, 1929 2 Sheets-Sheet l abbi/M011 Dec. 3, 1935. L.J. TETLow 2,022,791

VALVE Filed sept. 2o, 1929 2 sheets-sheet 2 gru/vento@ Patented Dec. 3,1935 UNITED STATES PATENT OFFICE VALVE Lewis J. Tetlow, Holyoke, Mass.

Application September 20, 1929, -SerialNo. 394,060

15 Claims.

This invention relates to fluid control means and has for its principalobject the `provision of `ner and after .the casing has .been installedthe handle for operating the valve may be later inserted and can begiven any angular positioning mostV convenient for operation.

A still further object of the inventionV is the provision of a handleoperated valve in which the relation of the handle to the valve may bealtered at will. Other objects of the invention relate primarily todetails and will be ascertained .by reference to the claims.

In a` valve of this type it is quiteessential to keep the cost as low as'possible ascompetition is keen, yet at the same time it is not possiblebecause of such competition to sacriceany advantages other competingvalves have. The valve of the present inventionl has therefore been sodesigned that the labor required to produce the several elements shallbe Vreduced to the lowest possible point and `that the labor cost `ofinstallation of the `iinishedvalve shall likewise be kept lower than*usual.

In the drawings?.-

Figure l is an elevation with the cover plate removed.

Figure 2 'is a vcentral vertical section.

Figure 3 is a section'on line 3 3 of Figure 2.

Figure 4 is a section' on line 4 4 oi Figure 2.

Figure 5'is a horizontal section taken thru the central chamber of thevalve justV above the operating lever.

The casing l0 is made of a single piece divided into'an upper dashpotchamber III; a central chamber l2 and a valve chamber I3, the latterconsisting ofthe inlet space l5 sandthe outlet space l 4 these beingseparated by the usual partition i5. The `valve stem Il slides thru therather heavy horizontal wall YI8 Which separates the dashpot-chamberVfrom the central chamber and thru thev'similar 'but lower horizontalwall I9 which separates the lmiddle chamber from the outlet chamberandin addition has a bearing in the body 200i the closure 2l and passesthru gaskets in each of the horizontal walls.

At its lower end-the stem Il is tapped to receive the carrier 232Whichis received freely in the central opening 24 inthe partition I6. The

valve proper 25 is loose on the carrier23 but'is limitedin verticalmovementby the three-shoul- Y ders ZS'fin onedirectionand'bytheauxiliary' valve 28 Which-is threaded on thecarrier23 and` heldinchosen'positionfby a lock'inut-B so-that by 5 5+ moving the-auxiliaryvalve'on the threadedzlower portion 3ltof the carrier 23 the amount ofplay` of thervalve 25 can be regulated. The .upper sur-v face' of thevalve'25A is planeand onit rests a flat disk 32 fwhich is -faced on bothsides with a 10H rubber composition material the disk being perforatedin anumberof places-sothat in applying. the-rubber composition itpenetrates vthe holes and makes a much-more `iirrnanchoring.: The rubbercomposition-is held-to the `disk-32 in addilf' tion by the usualcement.lTherubber compositionon the top surface of rthe-disk 32-Will engage aseat 33oon the bottom face ofthe partitionV Hi..` The auxiliary-valve-28will likewise carry a simi?. Y lar but smaller disk 33a, thetop surface of which 20 'l engages against `the'smoothvbottom surface ofthe main valve sothat -inw` openingthe valve against pressure it is onlynecessary to release the smaller auxiliar-y valve, thus relieving.. thepressure onfoneside only of themain valve 25 .whichi251'l thereuponmaydrop by gravity: The '-kerf 34 in thebottom of .the-portion 3| is forconvenient and positive assembly ofthe carrier 23 and the A valve stemllythe carrier having a small upper portion at the-bottom ofthe plunger.

Abovethehorizontal Wallgl the valve-stem I l has a diametrical bore v31,anaXial bore 38'rising centrally from the bore `3l andan-inlet passage39Which is `radiaLthis latter bore 39open- 35 ing into a slightly largeraxialbore 40 having a conicalseat `il .for the needle-valve 42 .whichgoverns the rate of oW` ofluidthru thesmaller or restricted bore 38.Between the bores 39 and... 3l a piston44fis Vsecured-to thervalve stemin 40 some permanent manner preferably by-sweatingA it on.- Thepiston isof sufcient axialdepth to receive aA plurality of Acheck valves- 45` andon its cylindrical periphery-carriesa plurality of oil.. grooves 41.Piston oilrings may be carried by these grooves 41 -but in prac-tice Iprefer not` to have them as I can readily make the parts-suiiicientlyaccurate to make the rexpense of the rings unnecessary. Each valve 45consists ina fluted stem 48 and a head 49, the latter preferably be- 50ing spherical so that I `may rest on the three heads 49 a follower50'Which is merely a disk tting rather snugly in the dashpot chamber andhaving a` plurality of equispaced openings 5l to pass the oil in bothdirections. A spiral spring 54 rests upon the disk or follower 50 at ornear its periphery and at its apex engages the bottom wall 55 of theclosure 2l. A heavy spring 51 engages the bottom wall of the piston 44and the top face of the horizontal wall I8, this spring being held inposition by the hexagonal head 58 f a gland 59 cooperating with asimilar gland El? to compress the Ypacking 6| to prevent leakage offluid from the upper dashpot chamber ll to the central chamber I2 whichmay be referred to Vas the lever chamber. It will be noted that theglands 5B and 60 serve as bushings for the Vplunger l1 which engages thecasing only for a very short distance above the bottom face of thehorizontal wall I9. v

To prevent leakage of water upward from the water chambers I4 and I5into the handle chamber l2 I provide packing 66 held in place by a gland61. In this particular case I might use a second gland similar to 6U butit is very difficult to install such a gland and I iind that in practiceI can avoid all leakage upwardly of the water by the packing 66 withoutincreasing the friction on the valve stem I1 to an undesired degree. Thehead of the gland 61 is of special design because I desire to use thehead of this gland to position the pivoting stud 1U. To this end theupper portion 1| of the head is made hexagonal for adjustment of thegland, the lower portion 12 of the head may be round or hexagonal asdesired and between the two portions which together form a spool Iprovide the annular recess 13 which Very snugly receives the fiatanchoring portion 15 for the pivot stud 10. Y

The portion 15 is substantially a disk having a slot opening radiallyfrom the center of such width as to receive the diameter of the glandbetween the portions 1I and 12. 'Ihere is no tendency for the stud tomove in any other direction thanup and down and the amount of contactbetween the anchoring plate and the head portions 1l and 12 is suicientto prevent any rocking of this member.

The valve stem or plunger I1 is slotted as at 11, this slot receivingthe flattened portion 18 of a lever 19 having a handle portion 80,. Thepivot 8l may be a simple cylinder and with a looseness of iit so that itcan very conveniently bel withdrawn. To adjust the vertical height ofthe pivot pin 8l I prefer that the stud 10 shall have a threadedengagement with the standard 83 rising from the anchoring plate 15 forin this way I can adjust the height of the pivot 8l by a simple removalof the anchoring plate 15 which may readily be done. Under othercircumstances I prefer to adjust the relationship of the lever 18 to theplunger l1 by use of the stop 84 the upper portion of which is somewhatsnugly slidable in a bore 85 opening at its bottom to a larger bore 85the latter being tapped and opening into the still larger threaded bore36. The stop member 84 has a kerf as at 88 by means of which it `can beadjusted by means of its threaded engagement vertically in the valvestem or plunger E1 so that its upper active portion 8B shall project thedesired distance above the bottom ofthe slot 11. The stop member 84being coaxial with the plunger is central of the diametric slot 11.

The valve as thus far described is as satisfactory as the usual valvesbut like them is subject to water hammer action. I avoid this unpleasantoccurrence by providing an air cushion chamber in the top of the closure2l, the vertical wall 2&3 of which is tapped as at 90 to receive a plug9i having a square head 92 for convenience of assembly. This plug 9l`compresses a gasket 93 against a shoulder 94 and drives the packing intofirm engagement with the plunger or valve stem I1. A cap S6 has a screwthreaded engagement 5 with the outer upper surface of the closure 2lhiding the operating parts and preventing introduction of dirt or grit.In order to make the air cushion effective I operate the valve a fewtimes with the plug 9| a bit loose thus permitting entry 10 of oil intothe space 91. When the proper amount of oil has leaked into this spaceso that the volume of air space remaining is suflicient to cushion theplunger on its upward stroke I bind down the plug by its squared portionS2 and make 15 the seal at the gasket 93 liquid tight. When so adjustedI am unable to get any water hammer action at any pressure that wouldever be used on a device of this kind. While my practical tests haveonly gone to two hundred and twenty-five 20 pounds I believe that thewater hammer action will be avoided at pressures greatly in excess ofthis amount.

What I claim is:

1. In a lever operated valve, a pair of spaced stuiling boxes, a valvestem extending thru said stuiiing boxes, a pair of spaced glands in saidstuliing boxes for said stem, a lever between the glands for moving thestem, and means carried by one of the glands for pivoting the lever.

2. A valve operating mechanism comprising a. casing, a reciprocatingplunger in said casing, said plunger revolvable in said casing, a valveand valve seat, lever operating means for said valve, and means withinsaid plunger for altering the point of contact between the lever andplunger.

3. A Valve operating mechanism comprising aV casing, a freely rotatableplunger mounted within said casing for reciprocating movement therein,

a valve carried by said plunger, and means car- 40 lried by the plungerfor regulating the limit of movement of said valve and means foradjusting said valve.

4. A valve operating mechanism comprising a casing having inlet andoutlet ports, a valve and valve seat, an enclosed chamber above saidvalve and seat, a plunger in said casing, means on said plunger forsupporting said valve, means carried by said plunger for unseatingandseating said valve, and means in said plunger for regulating thepoint of contact between the lever and plunger.

5. A valve operating mechanism comprising a casing, partitions in saidcasing for enclosing the operating mechanism from a valve and valveseat, a plunger extending thruV said partition for supporting a valvecarrier and valve, means above said partition for operating saidplunger, and means carried by said plunger accessible from beneath saidpartition for regulating the point of contact between the operatingmeans and plunger.

6. A valve operating mechanism comprising a casing having a plurality ofcompartments, a plunger extending thru said compartments, a valve andvalve seat in the lower compartment, means for securing said valve tosaid plunger, means in another compartment for operating said plunger,and means accessible from the lower compartment for adjusting the pointof Contact between the operating means and plunger.

'7. A valve operating mechanism comprising a casing, a plunger movablein said casing, a valve and valve seat, means secured to the plunger forloosely supporting said valve, a slot in said plunger, an operatinglever passing thru said slot, means for pivotally mounting said lever insaid casing, and means carried by the plunger for regulating the pointof contact between the lever and plunger.

8. In a valve, a stem having a slot, a lever projecting thru the slot, apivot for the lever, means carried by the stem for altering the point ofcontact between the lever and stem, and means for moving the pivotparallel to the axis of the stem.

9. In a valve, a stem having a slot, a lever projecting thru the slot, apivot for the lever, means carried by the stem for altering the point ofcontact between the lever and stem, said means being rotatable withrespect to and coaxial with the stem axis.

10. In a valve, a stem having a slot, a lever projecting thru the slot,a pivot for the lever, means carried by the stem for altering the pointof contact between the lever and stem, said means having screw threadedengagement with the stem, and additional means for adjusting the heightof said pvot.

11. In a valve, a stem having a slot, a lever projecting thru the slot,a pivot for the lever, and means for supporting the pivot, saidsupporting means being adjustable in a direction parallel to the axis ofthe stem and also angularly movable about the stem axis.

12. In a valve, a stem having a slot, a lever projecting thru the slot,a pivot for the lever, and means for supporting the pivot, saidsupporting means being adjustable in a path parallel to the axis of thestem.

13. In a valve, a stem having a slot, a lever projecting thru the slot,a pivot for the lever, and adjustable pivot supporting means forchanging the location of the pivot with respect to the slot andangularly about the stem axis.

14. In a dash pot controlled valve, a casing, a partition in the casing,a plunger extending thru the partition, a pair of opposed glands formingbushings for the plunger, packing between the glands, and a thirdbushing gland surrounding the plunger, a lever for operating theplunger, an adjustable pivot loosely clasping said third gland, saidlever being connected to turn on said pivot.

15. The device of claim 14 in which the lever pivot support is locatedbetween two of the glands and is easily removable for convenientmanipulation of one of the glands.

LEWIS J. TE'ILOW.

